<template>
  <div class="product">
    <!-- 搜索框 -->
    <div class="search">
      <template>
        <el-select
          v-model="searchValue"
          filterable
          clearable
          remote
          @change="searchTextChange"
          reserve-keyword
          @clear="clear"
          placeholder="请输入姓名,如果不更新,点击右侧搜索按钮"
          :remote-method="remoteMethod"
          :loading="loading"
        >
          <el-option
            v-for="item in searchList"
            :key="item.sId"
            :label="item.name"
            :value="item.name"
          >
          </el-option>
        </el-select>
      </template>
      <!-- 搜索按钮 -->
      <el-button
        type="primary"
        icon="el-icon-search"
        @click="onSearchButtonClick"
        plain
      ></el-button>
      <!-- 添加按钮 -->
      <el-button type="primary" @click="addStu" :disabled="disabled"
        >添加项目</el-button
      >
    </div>
    <!-- 班级选择 -->
    <div class="select-class">
      <!-- 框框 -->
      <el-form>
        <el-form-item label="选择班级:">
          <el-select
            v-model="classes"
            filterable
            @visible-change="classVisible"
            @change="classChange"
            placeholder="请选择"
          >
            <el-option
              v-loading="selectLoading"
              label="全部"
              value="all"
            ></el-option>
            <el-option
              :label="item"
              :value="item"
              v-for="(item, index) in classList"
              :key="index"
            ></el-option>
          </el-select>
        </el-form-item>
      </el-form>
    </div>
    <!-- 导出excel -->
    <div class="exportExcel">
      <el-button icon="iconfont icon-excel" @click="exportExcel"
        >导出excel数据</el-button
      >
    </div>
    <!-- 表格 -->
    <div class="stu-table">
      <el-table :data="stuData" v-loading="loading" border style="width: 100%">
        <el-table-column
          prop="headimgurl"
          align="center"
          label="头像"
          width="100"
        >
          <!-- 插槽作用域 -->
          <template v-slot="scope">
            <el-avatar
              shape="square"
              :size="50"
              fit="fill"
              :src="scope.row.headimgurl"
            ></el-avatar>
          </template>
        </el-table-column>
        <el-table-column prop="name" align="center" width="120" label="姓名">
        </el-table-column>
        <el-table-column prop="degree" align="center" label="学历">
        </el-table-column>
        <el-table-column prop="class" align="center" label="班级">
        </el-table-column>
        <el-table-column prop="productUrl" align="center" label="项目">
        </el-table-column>
        <el-table-column prop="cTime" align="center" label="创建时间">
        </el-table-column>
        <el-table-column align="center" label="操作">
          <template v-slot="{ row }">
            <el-button
              type="primary"
              class="btn"
              icon="el-icon-view"
              @click="lookStu(row)"
              >查看</el-button
            >
            <el-button
              type="primary"
              class="btn"
              icon="el-icon-edit"
              @click="editStu(row)"
              >编辑</el-button
            >
            <el-button
              type="danger"
              class="btn"
              icon="el-icon-delete"
              @click="deleteStu(row)"
              >删除</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </div>
    <!-- 分页器 -->
    <div class="pagination">
      <el-pagination
        background
        hide-on-single-page
        layout="prev, pager, next"
        :current-page.sync="currentPage"
        @current-change="changePage"
        :page-size="stuPageSize"
        :total="stuTotal"
      >
      </el-pagination>
    </div>
    <!-- dialog弹出框 -->
    <qf-dialog></qf-dialog>
  </div>
</template>
<script>
import dialog from "@/components/Dialog";
import * as api from "../../../../api";
import { mapState, mapActions, mapMutations } from "vuex";
import qee from "qf-export-excel"; //前端导出excel的方法
export default {
  computed: {
    ...mapState(["stuData", "loading", "stuTotal", "stuPageSize"]),
  },
  components: {
    "qf-dialog": dialog,
  },
  data() {
    return {
      params: {
        class: "",
        count: 5,
      },
      dataPage: "", // 页码
      dataCount: 5, // 每页展示的数量
      total: 0, // 总共的数据条数
      classList: [], //班级列表
      disabled: false,
      selectLoading: true,
      classes: "", //select绑定的班级
      searchList: [],
      searchValue: "",
      blurSearchValue: "",
      list: [],
      currentPage: 1,
    };
  },
  created() {
    this.GET_STULIST(); //获取学员数据列表
  },
  methods: {
    ...mapActions(["GET_STULIST"]),
    ...mapMutations([
      "SHOW_DIALOG",
      "CHANGE_DIALOG_TITLE",
      "SET_CURRENT_ROW",
      "SET_STU_DATA",
    ]),
    addStuRequest(params) {
      //将来通过dialog的eventBus进行调用
    },
    editStuRequest(params) {
      //将来通过dialog的eventBus进行调用
    },
    // 分页器页码发生改变的时候触发 的事件
    changePage(page) {
      //判断搜索框是否有值,如果有,就展示搜索结果的分页
      if (this.searchValue) {
        api.searchStuApi(page, this.searchValue, null).then((res) => {
          this.SET_STU_DATA(res.data);
        });
      } else {
        //页码变更,传给后台,重新获取数据
        // console.log(page);
        this.GET_STULIST({ page });
      }
    },

    // 导出excel
    exportExcel() {
      let titleList = [
        {
          title: "头像地址",
          key: "headimgurl",
        },
        {
          title: "姓名",
          key: "name",
        },
        {
          title: "学历",
          key: "degree",
        },
        {
          title: "班级",
          key: "class",
        },
        {
          title: "项目地址",
          key: "productUrl",
        },
        {
          title: "创建事件",
          key: "cTime",
        },
      ];

      qee(titleList, this.stuData, "2104班级信息");
    },
    // 班级选择框展开/收起触发的事件
    classVisible(isVisible) {
      //展开选择器的时候,loading变为ture
      this.selectLoading = true;
      //展开的时候需要获取数据
      //调用获取列表的方法
      // console.log(isVisible);
      if (isVisible) {
        //下拉框出现了
        //发送请求,获取班级列表
        api.getClassesApi().then((res) => {
          // console.log(res);
          this.classList = res.data.data;
          // console.log(this.classList);
          this.selectLoading = false;
        });
      }
    },
    // 选择班级
    classChange(query) {
      console.log(query);
      //query就是选中的option
      //1.select展开的时候 需要展示所有的班级列表
      //2.选中班级列表的时候,要更新表格
      // console.log(query);
      //调用早已经封装好的GET_STULIST,传递班级就可以了
      // console.log(query);
      //当query等于all的时候,表示要展示所有的班级
      if (query === "all") {
        query = ""; //将query重新赋值为空 因为不传的话 后台就默认返回所有数据
      }
      this.GET_STULIST({ classes: query });
    },
    onSearchButtonClick() {
      // 点击搜索按钮
      console.log(this.searchValue);
      api.searchStuApi(null, this.searchValue, null).then((res) => {
        this.SET_STU_DATA(res.data);
      });
    },
    // 搜索框失去焦点 保持输入框的内容
    // 编辑学员
    editStu(row) {
      //修改dialog标题
      this.CHANGE_DIALOG_TITLE("编辑学员信息");
      //显示dialog
      this.SHOW_DIALOG();
      // console.log(row);
      //将当期这行的数据回显到dialog弹出框中 通过vuex修改currentRow的值
      this.SET_CURRENT_ROW(row);
    },
    //查看学员资料
    lookStu(row) {
      this.SET_CURRENT_ROW(row);
      this.$router.push({ path: "/studentManager/profill" });
    },
    // 删除学员
    deleteStu(row) {
      // console.log(row);
      this.$confirm("此操作将永久删除该文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          api.delStuApi(row.sId).then((res) => {
            if (res.data.state) {
              //删除成功
              this.GET_STULIST(); //更新列表
              this.$message({
                type: "success",
                message: "删除成功!",
              });
            } else {
              //删除失败 这条数据已经被别人删除了
              this.$message.error("删除失败,数据不存在");
            }
          });
        })
        .catch(() => {
          this.$message({
            type: "warning",
            message: "已取消删除",
          });
        });
    },
    // 增加学员
    addStu() {
      //修改dialog标题
      this.CHANGE_DIALOG_TITLE("增加学员信息");
      // 弹出dialog
      this.SHOW_DIALOG();
    },
    clear() {
      //情况输入框内容的时候,表格应该显示所有的内容
      // console.log(currentPage);
      this.currentPage = 1;
      console.log(this.currentPage);
    },
    // 搜索框选中值发生变化的事件
    searchTextChange(searchText) {
      console.log(searchText);
      //发送请求,更新列表
      //更新列表
      api.searchStuApi(null, searchText, null).then((res) => {
        this.currentPage = 1; //让分页器的数值初始化
        this.SET_STU_DATA(res.data); //vuex中更新表格数据的方法
      });
    },
    remoteMethod(query) {
      // 键盘弹起的时候获取输入值
      console.log(query);
      this.searchValue = query;
      //向后台发起请求
      api.searchStuApi(null, query, null).then((res) => {
        // console.log(res);
        console.log(res.data.data);
        //数组去重
        let norepeat = [];
        // let flag = true;
        for (let i = 0; i < res.data.data.length; i++) {
          let flag = true;
          for (let k = 0; k < norepeat.length; k++) {
            if (norepeat[k].name === res.data.data[i].name) {
              flag = false;
              break;
            }
          }
          if (flag) {
            norepeat.push(res.data.data[i]);
          }
        }
        // console.log(norepeat);
        this.searchList = norepeat;
      });
    },
    mounted() {
      // 页面加载 获取表格数据
    },
  },
};
</script>
<style scoped lang="less">
.search {
  line-height: 60px;
  text-align: left;
  margin: 20px 0;
  /deep/ .el-input__inner {
    width: 300px;
  }
}

.select-class {
  line-height: 40px;
  text-align: left;
  margin-bottom: 20px;
}
.stu-table .btn {
  width: 65px;
  height: 25px;
  padding: 0;
}
.pagination {
  margin-top: 20px;
}
/deep/ .exportExcel i.icon-excel {
  color: green;
  font-size: 20px;
  margin-right: 3px;
}

.exportExcel .el-button {
  padding: 4px 7px;
  float: right;
}
.exportExcel {
  margin-bottom: 10px;
  overflow: hidden;
}
</style>
